-/* Sets the issuer of the certificate associated with the received SCTs */
-void CT_POLICY_EVAL_CTX_set0_issuer(CT_POLICY_EVAL_CTX *ctx, X509 *issuer);
+/*
+ * Sets the issuer of the certificate associated with the received SCTs.
+ * Increments the reference count of issuer.
+ * Returns 1 on success, 0 otherwise.
+ */
+int CT_POLICY_EVAL_CTX_set1_issuer(CT_POLICY_EVAL_CTX *ctx, X509 *issuer);